INFLUENCE OF MICROPOROUS CHARACTERISTICS OF ACTIVATED CARBONS OIL THEPERFORMANCE OF AN ADSORPTION CYCLE FOR REFRIGERATION

The performance of an adsorption refrigerating process, quantified by the coefficient of refrigerating performance (COP), depends on the ads orbent. From the Dubinin-Astakhov equation, it is possible to calculat e the performance of a basic adsorption cycle, taking the characterist ics of the adsorbate and the adsorbent into account. The influence of the physical characteristics of the adsorbent on performance is shown by way of the parameters of the Dubinin-Astakhov equation: total micro pore volume, W-0, characteristic energy, E(o); and exponent, n. The in fluence of the pore size dispersion is estimated thanks to the Dubinin -Stoeckli equation and by comparison of the performances simulated wit h measured characteristics of several activated carbons. This study sh ows that there exists, for given thermodynamic conditions, an activate d carbon having optimal physical characteristics that allows us to obt ain the best performance.